Fluorescent polyelectrolyte capped silver nanoclusters: Optimization and spectroscopic evaluation

► Fluorescence anisotropy was high (0.30). ► Fluorescence lifetime was short (few hundred picoseconds). ► Anisotropy and lifetimes were excitation wavelength dependant. ► Ag nanoclusters behaves as mixture of fluorophores. ► Two different diffusion coefficients when excited with blue and red laser.